If you issue to us a notice (a "Lessor Default Notice") that your rights as
assignee under the Assignment have become exercisable we agree that we will
thereafter (a) pay to you at such account as you may nominate all rentals and
other amounts from time to time payable by us under the Lease; (b) perform,
observe and comply with all our other undertakings and obligations under the
Lease in your favor and for your benefit as if you were named as "Lessor"
therein instead of the Assignor; and (c) if you so request, enter into a lease
with you or your nominee, on the same terms (mutatis mutandis) as the Lease.

If the Assignor is in breach of any of its obligations, express or implied,
under the Lease, or if any event occurs which would permit us to terminate,
cancel or surrender the Lease we will (a) immediately upon becoming aware of it,
give you notice of such breach or event, (b) accept as adequate remedy for any
such breach performance by you of such obligations within 7 days of our written
notice to you; and (c) if you so request, enter into a lease with you or your
nominee on terms identical to the Lease, mutatis mutandis.

We agree that after issue by you of any Lessor Default Notice, we will not
recognize the exercise by the Assignor of any of its rights and powers under the
Lease unless and until requested to do so by you.

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We agree that you will have the benefit of Clause 10 of the Lease (Indemnity),
subject, however, to all of the limitations set forth in the Lease, and agree
that we are bound by the terms of such clause, as though the same were set out
herein in full, mutatis mutandis.

Yours faithfully,